A rectangular field is to be enclosed by 260 feet of fence. One side of the field is a building, so fencing is not required on that side. Fenced Area Building If x denotes the length of one side of the rectangle perpendicular to the building, determine the function in the variable x giving the area (in square feet) of the fenced-in region. Area, as a function of x = Determine the domain of the area function. Enter your answer using interval notation. Domain of area function =